Employment-based retirement and pension plan participation: declining levels and geographic differences.
D000328:Adult; D000368:Aged; D003258:Consumer Behavior / Q000706:statistics & numerical data*; D003625:Data Collection; D004493:Education; D005260:Female; D005843:Geography; D006801:Humans; D007750:Labor Unions; D008297:Male; D008875:Middle Aged; D010415:Pensions / Q000706:statistics & numerical data*; D017149:Private Sector; D017150:Public Sector; D012179:Retirement / Q000191:economics*; D012456:Salaries and Fringe Benefits / Q000145:classification / Q000706:statistics & numerical data*; D012923:Social Class; D014481:United States; D000078329:Workforce